Answer:
A. ecosystem, community, population
Dominance because the tall(T) gene is dominant over the t gene so the plant is tall.
Answer:
The two main things are:
A) people live in this layer and the weather occurs here
B) meteors burn up and it's the coldest layer
Detract carefully to insure it has a chance to survive
They can conserve energy and resources by regulating their activities, producing only those genes necessary for the cell to function.